64127444 has 12 divisors (see below), whose sum is σ = 114960468. Its totient is φ = 31281600.

The previous prime is 64127429. The next prime is 64127447. The reversal of 64127444 is 44472146.

It can be written as a sum of positive squares in 2 ways, for example, as 17724100 + 46403344 = 4210^2 + 6812^2 .

It is a super-2 number, since 2×64127444² = 8224658147946272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64127444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64127447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195347 + ... + 195674.

It is an arithmetic number, because the mean of its divisors is an integer number (9580039).

Almost surely, 2^64127444 is an apocalyptic number.

It is an amenable number.

64127444 is a deficient number, since it is larger than the sum of its proper divisors (50833024).

64127444 is a wasteful number, since it uses less digits than its factorization.

64127444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391066 (or 391064 counting only the distinct ones).

The product of its digits is 21504, while the sum is 32.

The square root of 64127444 is about 8007.9612886177. The cubic root of 64127444 is about 400.2653322914.

The spelling of 64127444 in words is "sixty-four million, one hundred twenty-seven thousand, four hundred forty-four".